forked from toolshed/abra
119 lines
2.9 KiB
Go
119 lines
2.9 KiB
Go
// Package client provides Docker client initiatialisation functions.
|
|
package client
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"net/http"
|
|
"os"
|
|
"path"
|
|
"strings"
|
|
"time"
|
|
|
|
"coopcloud.tech/abra/pkg/config"
|
|
contextPkg "coopcloud.tech/abra/pkg/context"
|
|
"coopcloud.tech/abra/pkg/i18n"
|
|
"coopcloud.tech/abra/pkg/log"
|
|
sshPkg "coopcloud.tech/abra/pkg/ssh"
|
|
commandconnPkg "coopcloud.tech/abra/pkg/upstream/commandconn"
|
|
"github.com/docker/docker/client"
|
|
)
|
|
|
|
// Conf is a Docker client configuration.
|
|
type Conf struct {
|
|
Timeout int
|
|
}
|
|
|
|
// Opt is a Docker client option.
|
|
type Opt func(c *Conf)
|
|
|
|
// WithTimeout specifies a timeout for a Docker client.
|
|
func WithTimeout(timeout int) Opt {
|
|
return func(c *Conf) {
|
|
c.Timeout = timeout
|
|
}
|
|
}
|
|
|
|
// New initiates a new Docker client. New client connections are validated so
|
|
// that we ensure connections via SSH to the daemon can succeed. It takes into
|
|
// account that you may only want the local client and not communicate via SSH.
|
|
// For this use-case, please pass "default" as the contextName.
|
|
func New(serverName string, opts ...Opt) (*client.Client, error) {
|
|
var clientOpts []client.Opt
|
|
|
|
ctx, err := GetContext(serverName)
|
|
if err != nil {
|
|
serverDir := path.Join(config.SERVERS_DIR, serverName)
|
|
if _, err := os.Stat(serverDir); err == nil {
|
|
return nil, errors.New(i18n.G("server missing context, run \"abra server add %s\"?", serverName))
|
|
}
|
|
|
|
return nil, errors.New(i18n.G("unknown server, run \"abra server add %s\"?", serverName))
|
|
}
|
|
|
|
ctxEndpoint, err := contextPkg.GetContextEndpoint(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var isUnix bool
|
|
if strings.Contains(ctxEndpoint, "unix://") {
|
|
isUnix = true
|
|
}
|
|
|
|
if serverName != "default" && !isUnix {
|
|
conf := &Conf{}
|
|
|
|
for _, opt := range opts {
|
|
opt(conf)
|
|
}
|
|
|
|
helper, err := commandconnPkg.NewConnectionHelper(ctxEndpoint, conf.Timeout)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
httpClient := &http.Client{
|
|
Transport: &http.Transport{
|
|
DialContext: helper.Dialer,
|
|
IdleConnTimeout: 30 * time.Second,
|
|
},
|
|
}
|
|
|
|
clientOpts = append(clientOpts,
|
|
client.WithHTTPClient(httpClient),
|
|
client.WithHost(helper.Host),
|
|
client.WithDialContext(helper.Dialer),
|
|
)
|
|
}
|
|
|
|
version := os.Getenv("DOCKER_API_VERSION")
|
|
if version != "" {
|
|
clientOpts = append(clientOpts, client.WithVersion(version))
|
|
} else {
|
|
clientOpts = append(clientOpts, client.WithAPIVersionNegotiation())
|
|
}
|
|
|
|
cl, err := client.NewClientWithOpts(clientOpts...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
log.Debug(i18n.G("created client for %s", serverName))
|
|
|
|
info, err := cl.Info(context.Background())
|
|
if err != nil {
|
|
return cl, sshPkg.Fatal(serverName, err)
|
|
}
|
|
|
|
if info.Swarm.LocalNodeState == "inactive" {
|
|
if serverName != "default" && !isUnix {
|
|
return cl, errors.New(i18n.G("swarm mode not enabled on %s?", serverName))
|
|
}
|
|
|
|
return cl, errors.New(i18n.G("swarm mode not enabled on local server?"))
|
|
}
|
|
|
|
return cl, nil
|
|
}
|